﻿#region Using Statements
using System;
using Microsoft.Xna.Framework;

#endregion

#region COPYRIGHT

/*
    Copyright (c) 2007, 2008, 2009, 2010 
        Roland Rosenkranz (Glatzemann@email.de)
*/

#endregion

#region LICENSE

/*
    This file is part of starLiGHT.Input.

    starLiGHT.Input is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    starLiGHT.Input is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with starLiGHT.Input.  If not, see <http://www.gnu.org/licenses/>.

    
    ADDITIONAL (commercial) LICENSES for starLiGHT.Input are available on request.
*/

#endregion

#region Version Stuff
// **************[ starLiGHT.Engine SVN ]**********************
// * $Rev:: 1496                  $:  Revision of last commit *
// * $Author:: glatzemann         $:  Author of last commit   *
// * $Date:: 2010-10-11 09:38:05 #$:  Date of last commit     *
// ************************************************************
#endregion

namespace starLiGHT.Input
{
    /// <summary>
    /// Takes an IDigitalControl but only returns true for Pressed if the control has been released
    /// since Pressed last returned true
    /// </summary>
    public class DigitalOneShotControl : IDigitalControl
    {
        bool lastState;
        IDigitalControl control;

        public DigitalOneShotControl(IDigitalControl digitalControl)
        {
            this.control = digitalControl;
        }

        public bool Pressed
        {
            get  
            { 
                bool ret = (!lastState && control.Pressed);
                lastState = control.Pressed;
                return ret;
            }
        }

        public bool Released
        {
            get
            {
                bool ret = (!lastState && control.Released);
                lastState = control.Released;
                return ret;
            }
        }
    }
}
